Robot Framework variable file in Python, accessed using extended syntax from test case file.

connectionstrings.py

class database(object):

  def __init__(self, env):
    if env == 'test':
      self.name     = str('test mysql 1') 
      self.host     = str('1.1.1.1')
      self.port     = str('11')
      self.login    = str('testlogin')
      self.password = str('testpass')

    elif env == 'beta': 
      self.name     = str('beta mssql 2') 
      self.host     = str('2.2.2.2')
      self.port     = str('22')
      self.login    = str('betalogin')
      self.password = str('betapass')

    elif env ==  'prod': 
      self.name     = str('prod aws 3') 
      self.host     = str('3.3.3.3')
      self.port     = str('33')
      self.login    = str('prodlogin')
      self.password = str('prodpass')

mytest.txt

*** Setting ***
Variables          connectionstrings.py

*** Variables ***
${env}            test
${DB}             ${database('${env}')}

*** Test Case ***
My Test Case 1
  Sleep  1s
  Log To Console  ${DB.name}
  Log To Console  ${DB.host}
  Log To Console  ${DB.port}
  Log To Console  ${DB.login}
  Log To Console  ${DB.password}